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  • Users: jorgefherrero
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  1. jorgefherrero

    question on manifold pipe

    I have a question regarding manifold piping, I would like to know the how head and flow behave in branches of a manifold. It is a reverse osmose plant, fed with a 6" ANSI Sch40S pipe, with five branches, 2 1/2" each. Each branch feeds reverse osmose vessels. The total flow is 190 cubic meters...
  2. jorgefherrero

    question on ABS piping

    I am working on the upgrade of a water treatment plant, where piping is made in ABS. We have valves with spigots with an outer diameter of 73.1 mm, which corresponds to 2 1/2" ANSI pipe. Do you know of a supplier of fittings and adaptors for ABS piping in ANSI Standard? Regards
  3. jorgefherrero

    question on pipe dimensions

    I have to build an extension in a plant to an existing pipe, and I do not know which pipe standard it is. The outer diameter of the pipe is 154 millimeters, which do not correspond to the 6" standard ANSI or ISO pipe. It may be millimetric pipe, but the flanges welded to that pipe read "BS"...
  4. jorgefherrero

    On Galvanic corrosion between stainless steel and aluminium

    I have a question regarding corrosion because of galvanic coupling. I am designing a plant where there is a water tank in Stainless steel 316 with a 6" flanged opening on the top. I am planning to mount an aluminium element on that flange. Thus there will be two flanges put together, one in SS...
  5. jorgefherrero

    Is there a norm for mounting lugs?

    Hello, I am looking for a norm for mounting lugs. I mean mounting lugs with a cylindrical and a conical part, for centering, like that in the image below. I suppose there is a norm for those items, specifying geometrical parameters. Does anybody know of it? Regards
  6. jorgefherrero

    looking for flexible pipe connector

    Hello anybody, I am looking for flexible connectors for pipes, allowing for some misalignment between the two parts of a pipe due to the mounting. Does anybody know of such flexible connectors for 1000 psi internal pressure, for diameters between 2" and 10"? Thanks in advance
  7. jorgefherrero

    valve check selection

    I have to select check valves for high pressure pipes (70 bar = 1000 psi), for sizes between 2" and 6". Up to now we are using single check valves, but I suppose it may be better to use double check instead, since they should make a slighter water hammer, and probably less pressure drop also. Is...
  8. jorgefherrero

    ASME B31.3 Allowable Stress values

    In ASME Code 31.3 for Pressure Piping there are some steels for which I do not know the allowable stress value. I mean 904L, and Superduplex S32750 or S32760, all in seamless pipes, I have not found anything about them in Appendix A of B31.3 tables. Which value does apply? Moreover, I have...
  9. jorgefherrero

    On ASME UG-37, openings in pressure vessel

    For openings on a torispherical head of a Pressure Vessel as UG-37, how should I calculate the reinforcement? Which value applies for "D": the inside shell diameter or the inside spherical diameter of the head? Regards

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